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Патент USA US3042142

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July 3, 1962
v. A. BOUFFORT
3,042,132
TWO-WHEELED MOTOR VEHICLE OF THE SCOOTER TYPE
Filed Dec. 27, 1960
2 Sheets-Sheet ,1
Mwmrmr
July 3, 1962
'
v. A. BOUFFORT
3,042,132
TWO-WHEELED MOTOR VEHICLE OF THE SCOOTER TYPE
Filed Dec. 27, 1960
2 Sheets-Sheet 2
United States Patent 0
1
l
3,h42,l32
Patented July 3, 1962
2
12 determines the axial position of the rod of the handle
bar relative to the tube of the fork.
The sleeve 8 carries -a bracket 20 situated adjacent to
its lower end. The said bracket has two legs 21 (FIG.
4) each provided with a bore through which passes a
spindle 22 secured by nuts 23. The connecting member
3 has the general shape of a pyramid provided at its
3,tl42,132
TWO-WHEELER) MOTQR VEmCLE 0F THE
SCGOTER TYPE
Victor Albert Boulfort, 31 Place de l’Hotel-de-Ville,
Bondy, Seine, France
Filed Dec. '27, 196i}, Ser. No. 78,356
Claims priority, application France Dec. 29, 1959
4 Claims. (Cl. ran-32)
apex with a nose 24 which pivots, through the agency
of a sleeve 25 of elastic material, on the spindle 22.
The present invention relates to a motor vehicle of 10
The intermediate member 3 is constituted by a ?rst
the scooter type comprising, on the one hand, a front
U-shaped member 26 which forms one of lthe sides of
part formed by the front fork and the handle-bar and,
the pyramid and a second U-shaped member 27 which
on the other hand, a rear part including a chassis pro
forms the base of the pyramid, and a tie-rod 28 con
tecting the rear wheel, the engine and the change-speed
gear, and capable of containing the front part, in order
necting the middle portions of the two members 26 and
27 and situated in the symmetry plane of the said two
to facilitate the transport of the scooter. The said vehi
cle is characterized by the fact that the chassis is sus
members which are ?xed to each other by the ends of
their legs. The three members 26, 27 and 28 thus form
a pyramid which cannot lose its shape.
pended and connected to the front part, not suspended,
by means of a connecting member having the general
shape of a pyramid the base of which, substantially
situated in a vertical plane, is removably ?xed to the sus
pended chassis, by the fact that the said pyramid bears
through its lower edge upon an element of the said
chassis, the said edge being situated adjacent to the centre
‘of gravity of the vehicle, while the apex of the said
pyramid is hinged to the lower part of a sleeve in which
pivots the tube of the front fork and by the fact that
a brace determines the running position of the front fork
relative to the said connecting member and transmits the
shocks to which is subjected the front fork to the said
connecting member towards the rear of the vehicle and
‘towards the ground, the said connecting member re
transmitting the said shocks to the suspended chassis
through the agency of the said edge bearing on an ele
ment of the said chassis.
The running position (FIG. 1) of the front fork rela
20 tive to the connecting member 3 is determined by a
brace 29 integral with the upper part of the sleeve 8.
The said brace is provided with a supporting member
30 having the shape of a spout the inner surface of
which is coated with a layer of ?exible and elastic mate
25 rial.
A locking device, constituted by a ring 32 sliding
along the tie-rod 28 and engaged on the supporting mem
ber 30, holds the said member against the tie-rod 28
and ?xes the running annular position of the front fork
relative to the connecting member 3.
A supporting member 33 is secured to the lower end
30
of the legs of the member 27 and constitutes the third
edge of the base of the pyramid, the two other being
constituted by the legs of the member 27. The said
supporting member 33 has the shape of a spout the inner
The accompanying drawings show diagrammatically
35 surface of which is coated with a layer 34 of supple
and elastic material which bears on a transverse element
‘and by way of example an embodiment of the vehicle,
object of the invention.
35 of the rear part of the vehicle.
The said rear part comprises a chassis 36 having the
FIG. 1 is a pro?le view of the scooter in running con
general shape of a parallelepiped and provided with side
dition, certain parts being broken away for the sake 40 panels 37, as well as with a cover 38 provided with a
of clarity.
saddle 39 and hinged at 40 to the chassis.
FIG. 2 is a pro?le View, on a larger scale, of the
A cradle 41 hinged relative to the chassis on a spindle
connecting member, certain parts being in cross sec
42 located adjacent to the centre of gravity G of the
tion.
vehicle, carries an engine 43, a change-speed gear 44
FIG. 3 is a cross sectional view along line III——III of
FIG. 2.
FIG. 4 is a plan view, on a smaller scale, of the said
connecting member.
and a shaft 45 on which pivots a rear wheel r2 provided
with a pneumatic tyre 47. The end of the cradle 41
opposite to the hinged spindle 42 is connected to a cross
bar 48 of the chassis by elastic rings 49 which constitute
FIG. 5 is a partial view in cross section of the front
the suspension of the chassis.
part of the vehicle.
The element 35 integral with the chassis and on which
50
FIG. 6 is a view of the front fork and the connecting
bears one of the edges of the base of the pyramid is
member in the folded position.
located adjacent to the centre of gravity G of the vehicle
’ According to the accompanying drawing, the scooter
and of the plane t containing the shafts of the front and
comprises a front part 1 and a rear part 2 united by a
rear wheels.
‘connecting member 3. The front part comprises a front 55
fork 4 on which is rigidly ?xed a shaft 5. On the said
The rear end of the tie-rod 28 carries a flap 50 pro
vided with a bore 52 and which constitutes one of the
shaft pivots a wheel r1 provided with a pneumatic tyre
6. The front fork has a tube ‘7 (FIG. 5) engaged in
‘a sleeve 8 and which pivots relative to the said sleeve by
means of two ball thrust bearings 9 and 10 situated at
the two ends of the said sleeve 8. A socket l1, screwed 60
parts of a holding device the second part of which is
constituted by ‘a bolt 53 sliding in a guide 54 integral
with a transverse element 55 of the chassis. The said
bolt carries an operating member 56, and a spring 57
tends to engage it in the bore 52. The vehicle, described
to the upper end of the tube 7 of the fork, is provided
with a bolt 12 sliding in a guide 13 and subjected to the
action of a spring 14. The said bolt carries an operat
above and shown in FIG. 1, in running condition, is easily
dismantled, its front part, as well as the connecting mem
ing member 15, and the spring 14 tends to maintain the
ber being then stowed away in the case formed by the
carrying the handle-bar 17. The said rod 16 is engaged
in the tube 7 of the fork and its lower end has two
notches 18 in engagement with a diametrical pin 19
user accomplishes the following operations:
end of the bolt 12 engaged in a bore made in a rod 16 65 chassis 36, the panels 37 and the cover 38.
In order to dismantle the front part of the vehicle, the
(1) He exerts a pull on the ‘operating member 15, in
integral with the tube 7 of the fork. The said pin 19,
order to free the bolt 12, then he exerts an axial pull
engaged in the notches l3, resists an angular movement 70 on the handle-bar, in order to free its rod 16 from the
of ‘the handle-bar relative to the fork, while the bolt
tube 7 of the fork. The freed handle-bar remains, how
3,042,132
4
ever, connected to the rear part of the vehicle by a sheath
58 enclosing and protecting the electric wires 59 sup
plying a head-light 60 and Bowden wires 61 connected
to control-levers d2 of which only one is shown;
(2) He exerts a pull on the operating member 56, in
order to free the bolt 53, and then, after having placed
in operating position a crutch 63 hinged at 64 to the
chassis 36, he frees the connecting member 3;
According to a modi?cation, the brace 29 could be
integral with the tiearod 28 and bear on the sleeve 8;
a ring sliding ‘along the said sleeve then constituting the
locking member which maintains the front fork in run
ning position relative to the pyramid.
The connecting member 3 could, according to a modi
?cation, have trapezium shaped cross sections, the tie-rod
28 being replaced, if desired, by two tie-rods disposed on
either side of the symmetry plane of the U-shaped mem
(3) He slides the ring 32 along the tie-rod 28, in order
to ‘free the supporting member 30 and to permit the os 10 bers 26 and 27. According to another modi?cation, the
said members could also be V-shaped. However, ac
cillation of the connecting member about its hinged shaft
cording to tests carried out, it would seem that the shape
in order to bring it to the position shown in FIG. 6‘ in
of the connecting member described ‘with reference to
which the front wheel is partly engaged inside the pyra
the accompanying drawing is to be preferred, not only
mid.
The handle-bar 16, 17, as well as the connecting mem
her 3 and the front fork provided with its wheel may then
easily be placed inside the case formed by the chassis.
The said chassis having the shape of a case may be placed,
for example, in the box of a motor vehicle.
In order to reassemble the scooter, the user accom
15 from the constructional point of view but ;also from the
point of view of comfort for the user.
I claim:
1. A motor vehicle of the scooter type comprising a
front part formed by a front fork and a handle-bar, a
rear part including a box-like chassis, a rear wheel having
a driving axis, an engine and a change-speed gear housed
plishes the reverse operations which offer no difficulty and
in and resiliently mounted with respect to said chassis,
can be effected very rapidly.
coupling means mechanically connected to said front pant
The foldable scooter described has the advantage of
and to said rear part, said chassis being able to contain
comprising a front fork, not suspended, which facilitates,
to a great extent, the manufacture of the front part of 25 both said front part and said coupling means to facilitate
the transport of said scooter, and in which said coupling
the scooter and reduces its cost price. However, due to
the fact that, on the one hand, the brace 29 is inclined
rearwardly of the vehicle and in the direction of the
means is constituted by a pyramid-like connecting mem
her the base of which is, in the running position of the
vehicle, located in a substantially vertical plane and being
through one of its base edges, upon an element of the 3 CD removably secured to said chassis, a supporting member,
forming the lower edge of said pyramid-like connecting
suspended chassis situated adjacent the centre of gravity
member, de?ning in transverse cross section the ‘general
G of the vehicle ‘and adjacent to the plane containing
ground S and, on the other hand, the pyramid bears,
the shafts of the front and rear wheels, the shocks to
which are subjected the front part of the vehicle, which
shape of an inverted U, an element of said chassis located
adjacent the center of mass of said vehicle and being
tend to oscillate the front ‘fork rearwardly in the direc 35 parallel to the driving axis of said rear whe‘el, said sup
porting member engaging said element and thereby hear
tion of the arrow 7‘, are transmitted by the said brace to
the connecting member 3 and exert on the latter a thrust
directed rearwardly of the vehicle and towards the
ground, so that the said connecting member retransmits
ing the lower edge of said pyramid-like connecting mem
ber, a holding device for ?xing the upper edge of said
pyramid-like connecting member to said chassis, a sleeve
the said thrusts ‘on an element of the suspended chassis 40 forming part of said front part, said front fork pivoting
inside said sleeve, hinging means connecting the apex of
placed adjacent to the centre of gravity of the vehicle.
said pyramid-like connecting member to the lower part
it follows that the said shocks, to which the front fork
of said sleeve, a brace fast with the upper part of said
is subjected during running, are absorbed ‘by the sus
pension members of the chassis and that the vehicle offers 45 sleeve, a locking device detachably connecting said brace
to the upper edge of said pyramid-like connecting mem
a stability comparable to that of a vehicle in which the
ber de?ning the running position of said front part with
front fork is suspended.
respect to said pyramid-like connecting member and
Moreover, the thrusts exerted by the brace 29 on the
transmitting the shocks to which said fork is subjected
tie-rod 28 tend to compress the layer 31 of elastic ma
to said pyramid-like connecting member in ‘a direction
terial, so that the weight of the ring 32. tends to engage
rearward and towards the ground, whereby said pyramid
the same on the supporting member 30. The said ring
like connecting member retransmits said shocks to said
thus offers the advantage that it cannot be lost yand of
chassis by the intermediary of the lower edge of said
avoiding any risk of unlocking under the in?uence of
pyramid-like connecting member bearing on said element
the shocks to which the front part of the vehicle is sub
of said chassis.
jected during running.
55
2. A vehicle as claimed in claim 1 and in which said
Since the connecting member 3 is principally subjected
pyramid-like connecting member is formed of two ‘U
to thrusts directed rearwardly of the vehicle and towards
shaped elements secured one to the other by the ends of
the ground, the holding device 52, 53 is only subjected
their legs, a tie-rod located in the plane symmetrical to
to very weak forces, its role being thus limited to holding
said two U-s‘haped elements ‘and being rigidly fastened to
the base of the pyramid in the plane of the front face of
the case ‘formed by the chassis.
One embodiment of the invention, object of the inven
tion, has been herein described by way of example, but
the middle part of each of said two U-shaped elements.
3. A vehicle as claimed in claim 1 in ‘which said lock
ing device comprises a further supporting member rigidly
fastened to said brace and which is adapted to be laid, in
it is obvious that many variations may be provided with
the running position of the vehicle, on a tie-rod forming
out departing from the scope of protection claimed.
65 the upper edge of said pyramid-like connecting member,
Thus, for example, the lower edge of the base of the
a ring slidably mounted on said tie-rod which maintains
pyramid could be constituted by a simple tube rigidly
secured to the legs of the members 26 and 27 and the
transverse element 35 of the chassis 36 could be con
stituted by an open spout directed upwardly and in which
could bear the tube forming the lower edge of the base
said further supporting member against said tie-rod, said
ring being automatically maintained through its own
weight in its locked position while the vehicle is in its
running position.
I
4. In a motor scooter, ‘the combination of ‘a rear pant
of the pyramid. The layer, of ?exible material and
including a chassis having ‘a box-like con?guration, an
which constitutes a shock absorbing member, may be
engine resiliently suspended to said chassis, a rear wheel
integral with the lower edge of the base of the pyramid
having a driving axis mounted to said chassis, said driving
75 axis being operatively connected to said engine, a front
or of the transverse member 35 of the chassis.
5
part including a sleeve, handle bars detachably mounted
ber is subjected to said pyramid-like connecting member
in one end of said sleeve and a fork member detachably
mounted in the other end thereof, ‘a front wheel mounted
in a rearward direction and towards the ground whereupon
said pyramid-like connecting member retransmits the
in said fork member, a pyramid-like connecting member
detachably connecting said rear part to said front part,
an apex portion of said pyramid-like connecting member
hingedly connected to said sleeve, a base portion of said
pyramid-like connecting member having one part resil
iently engaging said chassis adjacent the center of gravity
of said motor scooter and another part rigidly connected 10
to said chassis, and a brace-like member operatively con
nected between said sleeve and said pyramid~like con
necting member While said motor scooter is in its running
position to transmit the shocks to Which said fork mem
shocks to said chassis through said one part of said
pyramiddike connecting member resiliently engaging said
chassis, said front part and said pyramid-like connecting
member cap-able of being stored in said chassis.
References Cited in the ?le of this patent
UNITED STATES PATENTS
2,839,146
2,910,130
Bouffort _____________ __ June 17, 1958
Schlaphotf ____________ __ Oct. 27, 1959
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